View Full Version : Fisher Ambasaddor
Endspec
10-13-2008, 09:14 PM
Just got this from a fellow AKer and am starting on it, going to use it as a pre/tuner, phono unit for my mono system, Trying to get the schematic to build a power supply from one hybrid power amp that is the mate to it. I will try and build a box for it after it is up and running. the last picture is of the mystery tube, no number near it.
TheRed1
10-14-2008, 05:56 PM
Your 59-T and 59-A chassis are from a 1965 Fisher Ambassador console - model A-690. They were also used in the '65 Fisher Futura console. I previously posted that Futura chassis layout diagrams here:
http://www.audiokarma.org/forums/showpost.php?p=1624047&postcount=9
The missing mystery tube should be an ECC85/6AQ8 which is the FM oscillator/mixer. The one to its left should be a 6GK5. Incidentally, Fisher console chassis schematics are usually listed by the console model number so you'll want to look for the A-690. Hope this helps.
Endspec
10-14-2008, 06:54 PM
Thank you very much I just found that tube in my stash and am ready to try a fire it up and i will note that model number for later.
TheRed1
10-14-2008, 09:38 PM
That's cool that you had that tube handy. Any luck? You might be interested to know that Fisher considered the $1,000 Ambassador "typical" and used it in their advertising:
http://i205.photobucket.com/albums/bb275/irwinbay/65AmbassadorControlPanel.jpg
Endspec
10-14-2008, 09:55 PM
Well I went to bring it up and it was pulling to many amps so I shut it down, I need to get a schematicfor the amp section to trouble shoot it.
I have two different amp sections with it, the lower power one is complete but would need recaping and the other is minus the output transistors so that will be built into a small power supply for the tuner section later.
vBulletin® v3.7.4, Copyright ©2000-2009, Jelsoft Enterprises Ltd.